Hi @Lalitha Poluri ,
That's object cache with SharePoint Online, you could refer to this artilce for more: https://learn.microsoft.com/en-us/microsoft-365/enterprise/using-the-object-cache-with-sharepoint-online?view=o365-worldwide
The same issue has been asked here: https://answers.microsoft.com/en-us/msoffice/forum/msoffice_sharepoint-mso_win10-mso_o365b/sharepoint-online-server-cache/dcaedc43-116b-470e-9617-4f6e1a5ad432
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